Chuck and dust excluding jacket therefor



D. B. HUNTTING CHUCK AND DUST EXCLUDING JACKET THEREFOR Jan. 16, 1951 2 Sheets-Sheet 1 Filed Feb. 10, 1949 W QM vN w m owvm Nb R 0 T m V w G H M W N r m W. 7

T H A & M 0% n V 5 D D. B. HUNTTING CHUCK AND DUST EXCLUDING JACKET THEREFOR Filed Feb. 10, 1949 2 Jan. 16, 1951 2 Sheets-Sheet 2 M n MW M MN m NW T A a M 0% M x N groove 33 and a, screw 38 is provided which is entered in a threaded aperture in the body ill. The end of the screw 38 enters the circumferential grooves 36 in the bevel pinion to prevent the pinion from moving longitudinally. The pinion 34 has a socket opening 4d therein for receiving a Wrench by means of which the bevelpinion can be turned to rotate the scroll member 20 and thus move the jaws l8, l8.

For excluding abrasive material and other dust or extraneous material from the. interior of the,

'..portion 44 has suflicient pliability and resilience topermit the jaws l8, l8 to be adjusted or moved radially as required. With the jaws in any positions of adjustment the front portion 44 of the 'jacketprevents any dust or other material from entering the grooves l4, I4 from the front.

The'jacket 42 also includes an integral peripheral portion 45 which extends over the outer ends of the grooves I4, l4 and which engages and fits the periphery of the body unit. This peripheral 'portion 46 prevents dust or other material from entering the grooves l4, M at the outer ends thereof. In some instances dependence may be placed entirely on the resiliency of the peripheral portion 45 to insure a close fit with the periphery 'of the body unit. Preferably, however, the body "i is provided with an annular groove 48 near the rear, the peripheral portion 46 of the jacket being shaped to enter the said groove. resilient wire ring 50 is provided which can be snapped into place at the outside of the peripheral portion 46 opposite the groove 48. Thus the ring 50 serves in cooperation with the groove 48 to hold the peripheral portion 46 infirm engage- 'ment.

" The jacket 42 also includes an integral central portion 52 which extends over the inner ends of A split the grooves l4, l4 and which engages and fits the wall of the opening l2 in the body unit. This central portion 52 prevents dust or other material from entering the grooves l4, l4 at the inner ends thereof. In some instances dependence may be placed entirely on the resiliency of the central 7 portion 52 to insure a close fit with the wall of the opening !2.

Preferably, however, the wall of the opening I2 is provided with an annular groove 54 near the rear, the central portion 52 of the jacket being shaped to enter'the said groove. TA split resilient wire ring 56 is provided which can be snapped into place at the inside ofthe' central portion 52 opposite the groove "54. Thus the ring 56 serves in cooperation with the groove 54' tohold the central portion 52 in firm engage- In order to facilitate radial adjustment or "movement of the jaws l8, I8, the jacket is provided with asuitable amount of slack so that the portions of thejacket immediately adjacent peripheral portion 46 of the jacket is bulged outward to join the extending periphery of the front The material of the acket may portion 44. In this way the requisite amount of slack is provided. It will be understood that when the jaws are moved radially inward from the positions shown the slack at the periphery is taken up and a corresponding amount of slack is formed at the central hole l2.

When the chuck is provided with a radial rotatable member such as 34 for effecting the radial adjustment or movement of the jaws, it is necessary or at least preferable to provide the peripheral portion of the jacket with an opening 58 which registers with the said radially rotatable member so as to permit access thereto. In order to prevent dust or other material from entering the opening in which the radially rotatable member 34 is located, the peripheral portion 46 of the jacket is preferably formed to engage the body unit at the area immediately surrounding the opening 58. As shown, the peripheral portion 45 has an integral annular rib 50 which surrounds the opening 58 and which is entered in the opening for the rotatable member 34. The inner face When the screws are tightened the portion of the jacket immediately surrounding the'opening 58 is held in firm engagement with the chuck body.

It has been stated that the edges of the openings in the front portion 44 of the jacket closely fit the jaws l8, l8.

7 The edges of the openings may merely engage with the peripheral portions of the jaws, but as shown more clearly in Figs. 4

and 5, each jaw 18 preferably has grooves 56,

56 in the ends therof and grooves 68, 5B in the sides'thereof; these grooves being near the front faceof the body. The material of the jacket portion 44 extends into the said grooves 66, 66 and 58, 68, and by reason of the grooves there is a firmer engagement between the jacket portion and the jaws. If necessary or desirable the material of the jacket may be cemented in place in thegrooves but this is ordinarily not essential.

Figs 6 and '7 are generally similar to Figs. 4 and 5 but show an alternative jaw construction. A master jaw part 10 is provided which is similar to the rear portion of .the jaw l8 asalready' described. There is also provided a front jaw part 12 which is detachabl connected with the master jaw part 10 as for instance by means of screws 14, 14. With this construction the front jaw parts 12 are readily detachable so that they can be replaced by other front jaw parts adapted.

to meet special requirements. The grooves for the jacket are formed in the master jaw part and it will therefore be apparent that the front jaw parts can be removed and replaced without disturbing the engagement of themaster jaw parts with the jacket.

Figs. 8 and 9 are similar toFigs. 6 and 7 but show another alternative construction. The construction shown in Figs. 8 and 9 includes a. master jaw part 16 and a front jaw part I8, the construction differing from that shown in Figs. 6 and 7 in that the division between the twc'parts is behind the front face of the chuck body so that ithegrooves for the jacket are formed in the front jaw part rather than in the master'jaw part. With this construction it 'is necessary or at least desirable to remove the jacket when the front jaw parts 18 are removed. The front jaw parts 18 parts and th 94-. fifi t e e -e1 ei i t neflt f it 'eb a tli hei, f eihga d Tee in wire fi'g'a'gifl W I leral' bqltion t the i'ja wt t Held. it in um ehagefriehtwith thehfi "boe ejhit;

Leghe 3: binatioh e retetahle'e k m li dl l ii dy epenirig 'havi ng, radial g ves; dliter aridinner feridsfithefsa idg I h Cludihg jaws radially 111072.516 in the 'g'r'o projecting at; the front oi the ho c ly u V exemdin'g jacket te me 'e fle'gip e Qc'fir'n'prisi ng a portie n atthe f1 un it havingjs paed ff which the eW eXtehd Wit th; e ppenings fitting'the. jaw thef s'aiqi ket bmprising peripheral and, c'htia1p rtiofi's A tending eyer the ends of 'thef grbotee f '4- Wfie. it e I ing aha fitting'i he b'ody unitatltlttejp m2: .iti e emhi fiene a ta bl echuck. ingolthe'reof' ahdat the wall o; t 'e tr clugling a cylindriqal pqdy unit having radial thereinQa. spring -wire engagin the t ra P e thei en r. ens senda so .i cl dhertfehhr the jacket to hold it in firm" e mqva le n theerq es. ndp ee m ntwi'thf the chuck bodyjlinitfahd w9t helw y unita d .d s 'jwij e engaging the c ntral perti get. th e me wefreflex bletm t r altand 4 to hdldlit in firm engagement. xt th -the Itiq tet hefmn ithe'b ni t e' tmlfe nihg in the ehu e p d e 'eeek-eqe eine e e Q h,. i.9 v The eembination' of 1%: t a l t Ki :lawsF PQQQLW -Ql;tt lfit d llf t p nin s ijelpdih fek n dri el h d un t";a da s th mefitting the jaws d also Comprising a hfilfi ing radially movable jaws carried hyth beqytmit pertiqn exte gling ever the outer ends of the 50 3 d brej eetinge at the 'fre'iit,tthereoi, eaghr gIQOVEsfiJld, engaging and fitting the periphery "brt ehoay'fihit.

e 'eo-i ibinatien 'of a rotatab jle ehuek inmg a 'feylindrical bod unit having radial dYes I pn at their outer'ends 'a'nd al so in if ingfjawsragiallyi movable in the grooves and meeting at th jfroht of'the 'bed fihit, ehd'e tf st, excludiigg jacket formed of flexible, material andeeihpiisihg a ortion atthe trent or thegh'qdy mit haying spaced openings therein thrdiih Q. h fih 'iews x en w ht efidge 0f h t penfi n h J w ani also-comprising t .ing radiallv motable jaiils ca 1 hfi fel PQEf P xten n over h 6 791 ftihit arid firoieet iiget the ifr ont thereof, 'theg r'ooiesand' engaging and fitting the'pefiawigerfiprisin a r fia'r't and a .Q e h y n tthe a fpqr o i *es"1deteeheh1veenheeted te' jacket iricliiding sla c katthe peripheryto permit j fhj' fi f' f 1t ,i? m nt Q fihE Jaws- "The pe'mbin'ationj o f 'a' rotatable Chuckjinud'ingjalc'ylihdri cal body unit having a' centraI h havihg'ra'q'ial grooves open'ja itheir ou'terahd ifin'er erids,'the said chuck also' ineludg jaws radially nqvable in theglliooyies' and pr0- fjeetiii'g' at 'tlielfrent qf "the body uiiit, and vakiust i idih'gfiaelget formed of flexible material and eluding a cylindricalbody unit and also including radially movable jaws carried by the body unit and projecting at the front thereof, each jaw comprising a master part and a front part detachably connected to the master part and each frontv part having grooves therein at all sides thereof which grooves are close to the front face of the chuck body unit; and a dust excluding jacket formed of flexible material and comprising a portion at the front of the body unit having spaced openings therein through which the jaws extend with the material of the jacket at the edges of the openings extending into and fitting the grooves in the front parts of the jaws.

10. The combination of a rotatable chuck including a cylindrical body unit and also including radially movable jaws carried by the body unitand projecting at the front thereof, each jaw comprising a master part and a front part detachably connected to the master part and the said master and front parts of the jaws being spaced apart at all sides thereof to provide grooves between them which are close to the front face of the body unit, and a dust excluding jacket formed of flexible material and comprising a portion at the front of the body unit having spaced openings therein through which the jaws extend with the material of the jacket at the edges of the openings extending into and fitting the grooves between the master and front parts of the jaws.

11. The combination of a rotatable chuck including a cylindrical body unit and also including radially movable jaws carried by the body unit and projecting at the front thereof, the said chuck having means for moving the jaws radially which means includes a radial rotatable member having its outer end accessible at the periphery of the body unit, and a dust excluding jacket formed of flexible material and comprising a portion at the front of the body unit having spaced openings therein through which the jaws extend with the edges of the openings fitting the jaws, and also comprising a peripheral portion engaging and fitting the periphery of the body cluding a cylindrical body unit and also including radially movable jaws carried by the body unit and projecting at the front thereof, the said gaging and fitting the periphery of the body unit, the said peripheral portion of, the jacket having an opening therein registering with the said rotatable member to permit access thereto and the i said peripheral portion engaging and fitting the .body unit at the area immediately surrounding the said opening in the peripheral portion.

13. The combination of a rotatable chuck including a cylindrical body unit and also including radially movable jaws carried by the body unit and projecting at the front thereof, the

said chuck having means for moving the jaws L radially which means includes a radial rotatable .7 member having its outer end accessible at the periphery of the body unit, and a dust. excluding jacket formed of flexible material and comprising a portion at the front of the body unit having spaced openings therein through which the jaws extend with the edges of the openings fitting the jaws and also comprising a peripheral portion engaging and fitting the periphery of the body unit, the said peripheral portion of the jacket having an opening therein registering with the said rotatable member to permit access thereto and the said peripheral portion having an annular rib which engages and fits the outer end of the said rotatable member.

14. A dust excluding jacket for use with a rotatable chuck including a cylindrical body unit and also including radially movable jaws carried by the body unit and projecting at the front 1 thereof, the said jacket being formed of flexible material and comprising a portion positionable at the front of the body unit of the chuck and having spaced openings therein positioned and shaped to engage and fit the respective jaws of the chuck.

15. A dust excluding jacket for use with a rotatable chuck including a cylindrical body unit and also including radially movable jaws carried by the body unit and projecting at the front thereof, the said jacket being formed of flexible material and comprising arportion positionable at the front of the body unit of the chuck and having spaced openings therein positioned and Shaped to engage and fit the respective jaws of the chuck and also comprising a peripheralportion shaped to engage and fit the periphery of the chuck body unit.

16. A dust excluding jacket for use with a rotatable chuck including a cylindrical body unit having a central opening and also including radially movable jaws carried by the body unit and projecting at the front thereof, the said jacket being formed of flexible material and comprising a portion positionable at the front of the body unit of the chuck and having spaced openings therein positioned and shaped to engage and fit the respective jaws of the chuck and also comprising peripheral and central portions shaped to respectively engage and fit the periphery of the chuck body unit and to engage and fit the wall of the central opening in the chuck body unit.

17. A jawand jacket combination for use with a rotatable chuck including a cylindrical body unit and also including radially movable master jaws carried by the body unit, the said combination including front jaws connectible respectively with the master jaws and a jacket formed of flexible material and comprising a front portion having openings through which the jaws extend with the edges of the Openings fitting the jaws.

18. A jaw and jacket combination for use with v a rotatable chuck including a cylindrical body unit and also including radially movable master jaws carried by th body unit, the said combination including front jaws connectible respectively with the master jaws and a jacket formed of flexible material and comprising a front portion having openings through which the jaws extend with the edges of the openings fitting the jaws, the said jacket also comprising a peripheral portion shaped to engage and fit the periphery of the chuck body unit.

19. A jaw and jacket combination for use with a rotatable chuck including a cylindrical body unit having a central opening and also including 9 1, '10 radially movable master jaws carried by the REFERENCES CITED body unit, the said combination including front The following references are of record in the jaws connectible respectively with the master 1 jaws and a jacket formed of flexible material and file of thls comprising a front portion having openings 5 UNITED STATES PATENTS through which the jaws extend with the edges Number Name Dat of the openings fitting the jaws, the Said jack 818,993 Barr Apr. 24, 1906 also comprising eripheral and central por i n 1,007,132 Miller Oct. 31, 1911 shaped to respectively engage and fit the periph- 1,046,523 Whiton Dec. 10, 1912 ery of the chuck body unit and to engage a fi 10 1,528,433 Kay Mar. 3, 1925 the wall of the central opening in the chuck y 1,582,010 Hanson Apr. 20, 1926 unit. 1,794,511 Bush Mar. 3, 1931 2,153,847 Scruggs Apr. 11, 1939 DONALD HUNTTING- 2,376,594 Hite May 22, 1945 15 2,380,648 Hite July 31, 1945 

